Department of Civil Engineering;
Suleyman Demirel University;
Isparta 32260;
Turkey;
Department of Mathematics;
Azerbaijan Technical University;
Baku 1073;
Azerbaijan;
Department of Civil Engineering;
Gelisim University;
Istanbul 34310;
Turkey;
truncated conical shell(TCS); carbon nanotube(CNT); Winkler elastic foundation(W-EF); Pasternak elastic foundation(P-EF); hydrostatic pressure; buckling;